Add 1 to the memory location

Operation

M + 1 -> M

Table

INC | Increment Memory by One
================================================

M + 1 -> M                       N V - B D I Z C
                                 + - - - - - + -

addressing       assembler    opc  bytes  cycles
------------------------------------------------
accumulator      INC           1A    1     2
absolute         INC $nnnn     EE    3     6
absolute,X       INC $nnnn,X   FE    3     7
zeropage         INC $nn       E6    2     5
zeropage,X       INC $nn,X     F6    2     6

Flags

• Negative: 1 if bit 7 of result is 1; 0 otherwise
• Zero: 1 if result is zero; 0 otherwise